# Tag Group Configuration - Write Only Tags

**URL:** <https://forum.inductiveautomation.com/t/tag-group-configuration-write-only-tags/39734>\
**Category:** Ignition\
**Tags:** ignition80\
**Created:** [October 15, 2020, 9:20pm UTC](https://forum.inductiveautomation.com/t/tag-group-configuration-write-only-tags/39734 "2020-10-15T21:20:40Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![plarochelle](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/plarochelle/32/29608_2.png) [@plarochelle](https://forum.inductiveautomation.com/u/plarochelle)\
**Post date:** [October 15, 2020, 9:20pm UTC](https://forum.inductiveautomation.com/t/tag-group-configuration-write-only-tags/39734/1 "2020-10-15T21:20:40Z")

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Hi All,

We’re working on an Ignition 8 project with a large number of tags and trying to configure tag groups in the most performant way possible. We have ~25,000 tags which are for lack of a better term ‘write only’. They are commands in a PLC where the feedback is a different address. Thus we don’t need these tags scanned at all from a Vision/Historian/Alarming perspective - just need to be able to write to them (using system.tag.writeBlocking only) on demand.

Does anyone have any configuration tips for us?

Thanks,  
Pete

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**Author:** ![zacht](https://avatars.discourse-cdn.com/v4/letter/z/ea5d25/32.png) [@zacht](https://forum.inductiveautomation.com/u/zacht)\
**Post date:** [October 15, 2020, 9:32pm UTC](https://forum.inductiveautomation.com/t/tag-group-configuration-write-only-tags/39734/2 "2020-10-15T21:32:40Z")

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It sounds like you don’t need tags at all. Maybe [system.opc.writeValues](https://docs.inductiveautomation.com/display/DOC80/system.opc.writeValues) would accomplish your goal without the overhead of tags.

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<div class="post-metadata">

**Author:** ![plarochelle](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/plarochelle/32/29608_2.png) [@plarochelle](https://forum.inductiveautomation.com/u/plarochelle)\
**Post date:** [October 15, 2020, 9:33pm UTC](https://forum.inductiveautomation.com/t/tag-group-configuration-write-only-tags/39734/3 "2020-10-15T21:33:06Z")

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Great suggestion! We will investigate that. Thank you!